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Preparation method for heat-resistant microcrystalline glass capable of being molten at low temperature

A glass-ceramic and melting technology, which is applied in the field of preparation of heat-resistant glass-ceramics, can solve the problems of high melting temperature, short material properties, and high viscosity of glass liquid, and achieves strong practicability and efficiency. The effect of popularization, low production cost and resource saving

Inactive Publication Date: 2017-04-19
JIANGSU JIELONG GLASSWARE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved in the present invention is for Li 2 O-AL 2 O-SiO 2 Heat-resistant glass-ceramic has the characteristics of high melting temperature, high viscosity of glass liquid, and short material property. It provides a way to reduce the melting temperature of LAS basic glass without changing the main physical and chemical properties of the glass.

Method used

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  • Preparation method for heat-resistant microcrystalline glass capable of being molten at low temperature
  • Preparation method for heat-resistant microcrystalline glass capable of being molten at low temperature
  • Preparation method for heat-resistant microcrystalline glass capable of being molten at low temperature

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Effect test

Embodiment 1

[0024] Take 8.4 parts of lithium carbonate, 22.6 parts of aluminum hydroxide, 49.8 parts of quartz sand, 1.9 parts of magnesium oxide, 5.4 parts of zinc oxide, 2.1 parts of titanium dioxide, 1.5 parts of ammonium dihydrogen phosphate, 1.3 parts of antimony oxide, 1.1 parts of barium carbonate, nitric acid 0.9 parts of sodium, 1.4 parts of zircon sand. Melting: Mix the above-mentioned raw materials with a uniformity of more than 95%, put the mixed ingredients into a corundum crucible, and then melt them in a silicon-molybdenum furnace. The melting temperature is 1490°C and the melting time is 4 hours; forming : Pour the melted and clarified glass liquid on a stainless steel plate, spread it into a glass plate with a thickness of 5mm, and quench the rest into pieces with distilled water; annealing: put the glass plate into a muffle furnace at a temperature of 580°C for degradation Stress relief; after that, conduct DTA analysis of the glass to determine the nucleation temperatur...

Embodiment 2

[0026] Take 8.8 parts of lithium carbonate, 24.4 parts of aluminum hydroxide, 51.6 parts of quartz sand, 1.6 parts of magnesium oxide, 4.2 parts of zinc oxide, 1.3 parts of titanium dioxide, 2.7 parts of ammonium dihydrogen phosphate, 1.3 parts of antimony oxide, 1.1 parts of barium carbonate, nitric acid Sodium 1.4 parts, zircon sand 1.7 parts. Melting: Mix the above-mentioned raw materials with a uniformity of more than 95%, put the mixed ingredients into a corundum crucible, and then melt them in a silicon-molybdenum furnace. The melting temperature is 1530°C and the melting time is 6 hours; molding : Pour the melted and clarified glass liquid on a stainless steel plate, spread it into a glass plate with a thickness of 5mm, and quench the rest into pieces with distilled water; annealing: put the glass plate into a muffle furnace at a temperature of 580°C for degradation Stress relief; after that, conduct DTA analysis of the glass to determine the nucleation temperature and ...

Embodiment 3

[0028] Take 8.2 parts of lithium carbonate, 23.2 parts of aluminum hydroxide, 49.6 parts of quartz sand, 2.5 parts of magnesium oxide, 5.1 parts of zinc oxide, 1.7 parts of titanium dioxide, 3.5 parts of ammonium dihydrogen phosphate, 1.3 parts of antimony oxide, 2.7 parts of barium carbonate, nitric acid Sodium 1.2 parts, zircon sand 1.3 parts. Melting: Mix the above-mentioned raw materials with a uniformity of more than 95%, put the mixed ingredients into a corundum crucible, and then melt them in a silicon-molybdenum furnace. The melting temperature is 1520°C and the melting time is 5 hours; molding : Pour the melted and clarified glass liquid on a stainless steel plate, spread it into a glass plate with a thickness of 5mm, and quench the rest into pieces with distilled water; annealing: put the glass plate into a muffle furnace at a temperature of 580°C for degradation Stress relief; after that, conduct DTA analysis of the glass to determine the nucleation temperature and ...

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Abstract

The invention discloses a preparation method for heat-resistant microcrystalline glass capable of being molten at a low temperature. The heat-resistant microcrystalline glass is prepared from the following raw materials in percentage by weight: 7.2%-8.8% of lithium carbonate, 22%-24.4% of aluminium hydroxide, 49-51.6% of quartz sand, 1.6%-2.5% of magnesium oxide, 4.2%-6.8% of zinc oxide, 1.3%-2.2% of titanium dioxide, 1.5%-4% of ammonium dihydrogen phosphate, 1.3% of antimony oxide, 1.1%-2.7% of barium carbonate, 0.5%-1.4% of sodium nitrate and 1.2%-1.8% of zircon sand. In order to solve the technical problems that Li2O-AL2O-SiO2 heat-resistant microcrystalline glass has the characteristics of a high melting temperature, great viscosity of molten glass and short material characteristics, the invention provides a method capable of reducing a melting temperature of LAS base glass on the premise of not changing main physical and chemical properties of glass.

Description

technical field [0001] The invention relates to a preparation method of heat-resistant glass, in particular to a preparation method of heat-resistant glass-ceramic which can be melted at low temperature. Background technique [0002] The basic glass of a specific composition, after heat treatment at a certain temperature, becomes a composite material with uniform distribution of microcrystals and glass phases, which is called glass-ceramic. [0003] Li 2 O-AL 2 O-SiO 2 Glass-ceramics is a main variety of glass-ceramics, based on Li 2 O.AL 2 o 3 , SiO 2 Glass as the main component, after heat treatment, forms a glass-ceramic with β-quartz solid solution as the main crystal phase. It combines excellent thermal properties, optical properties and chemical stability, and is a very important transparent polycrystalline material. . In terms of high technology, it can be used to manufacture laser gyroscopes, gas lasers, large astronomical telescopes, etc. In civilian use, i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C10/00C03C6/04C03C4/00C03B5/235
CPCC03C10/0027C03B5/235C03C1/00C03C4/00
Inventor 孙国刚徐惠豪陆平张其土谢俊
Owner JIANGSU JIELONG GLASSWARE TECH
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